2798816809 has 8 divisors (see below), whose sum is σ = 2864695680. Its totient is φ = 2732973936.

The previous prime is 2798816791. The next prime is 2798816833. The reversal of 2798816809 is 9086188972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2798816809 - 2⁷ = 2798816681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2798816899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210219 + ... + 223135.

It is an arithmetic number, because the mean of its divisors is an integer number (358086960).

Almost surely, 2^2798816809 is an apocalyptic number.

It is an amenable number.

2798816809 is a deficient number, since it is larger than the sum of its proper divisors (65878871).

2798816809 is a wasteful number, since it uses less digits than its factorization.

2798816809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17999.

The product of its (nonzero) digits is 3483648, while the sum is 58.

The square root of 2798816809 is about 52903.8449358834. The cubic root of 2798816809 is about 1409.2611874794.

The spelling of 2798816809 in words is "two billion, seven hundred ninety-eight million, eight hundred sixteen thousand, eight hundred nine".